 /*******************************************************************************
  * Copyright (c) 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  * Daniel Kruegler - bug 137435
  ******************************************************************************/

 package org.eclipse.core.internal.databinding.internal.beans;

 /**
  * Used for wrapping objects that define their own implementations of equals()
  * and hashCode() when putting them in sets or hashmaps to ensure identity
  * comparison.
  *
  * @since 1.0
  *
  */
 public class IdentityWrapper {
     final Object o;

     /**
      * @param o
      */
     public IdentityWrapper(Object o) {
         this.o = o;
     }
     
     /**
      * @return the unwrapped object
      */
     public Object unwrap() {
         return o;
     }

     public boolean equals(Object obj) {
         if (obj == null || obj.getClass() != IdentityWrapper.class) {
             return false;
         }
         return o == ((IdentityWrapper) obj).o;
     }

     public int hashCode() {
         return System.identityHashCode(o);
     }
 }

